C&H painting help?

Hey there,
For our 4 year anniversary, I'm planning on making my boyfriend a Calvin and Hobbes painting. He's a big fan and he's been encouraging my art a lot lately, so I've decided to paint Calvin and Hobbes, but I can't decide on which of these to paint.

I'm not a very experienced painter, so I've shortlisted a few simpler images to recreate. All of these are ones I'm sure he'd like.

I know that there are a lot of awesome Calvin and Hobbes fans on here, so I'm reaching out to my Imgur family of experts to help me decide.

I'm not looking for upvotes, so please don't assume that this is a pathetic karma grab. All I ask for is a helpful comment about which picture you think would be best.